Abrasive apparatus



Jan. 25, 1949. E. M. CHASE 7 2,460,250

ABRAS IVE APPARATUS Filed April 14, 1947 s Sheets-Sheet 1 .JaLgM INVEN TOR. M%%6e Jan. 25, 1949. E. M. CHASE ABRASIVE APPARATUS 3 Sheets-Sheet 2 Filed April 14, 1947 Jan. 25, 1949. E. M. CHASE 2,460,250

ABRASIVE APPARATUS Filed April 14, 1947 3 Sheets-Sheet 3 Y /I w 1 Patented Jan. 25, 1949 2,460,250 AEBASWE APPARATUS Earle M. Chase, Springfield, Mass, assignor to Porter-McLeod Machin field, Mass... a corporation 14, 1947, Serial No. 741,353

Application April 6Cl'aims'. 1

This invention relates to abrasive apparatus.

The principal objects of the invention are directed to the provision of abrasive apparatus. which is adapted for culling, polishing, grinding; and various abrading; operations and while the novel. features of the invention will be explained in connection with cutlery such as knives, table knives, and the like, it will be understood that the novel feature of the apparatus may be adapted for various purposes as may be desired.

According to special features of the invention. a pair of coacting abrasive rolls are providedin combination with means for moving a plurality of knife blades up and down and longitudinally between said rolls and also in combination with other means for moving said rolls towards and away from. one another and the blades therebetween.

Said rolls are releasably supported at opposite ends and are rotated by means which is arranged to move adjacent and opposite ends of said rolls towards and away from one another. The supporting and rotating means at opposite ends of the rolls are operable independently of one another so that the axes of the rolls at one end thereof may be a relatively greater or lesser distance apart than at the other end. This is accomplished by novel means controlling the operation of the rolls in such a Way that a predetermined pressure is applied to the rolls irrespective of the thickness of the blades between them.

With the foregoing and various other. novel features and advantages and other objects of my invention as will become more apparent as the description proceeds, the invention consists in certain novel features of construction. and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in connection with the accompanying drawings wherein:

Figs. 1 and 2 are front and end elevational views showing abrasive apparatus embodying the novel features of the invention;

Fig. 3 is a sectional elevational view on the line 3-3 of Fig. 1;

Fig. 4 is a sectional plan view on the line 4-4 of Fig. 3;

Fig. 5 is a sectional elevational view on the 5-5 of Fig. 1;

Fig. 6 is a sectional elevational view on the line 6-6 of Fig. 5;

improvements in Fig. "I is a sectional plan view on the line 1-4 of Fig. 5;

Fig. 8 is a perspective view of one of the hangers for supporting the blade carrying device;

Fig. 9 is a plan view of the abrasive rolls of the apparatus;

e Tool Co., 1'nc., Hatof Massachusetts Fig. 10 is a front elevat onal: view at the-mom; upper side of the: apparatus showing-the mocha nisrn for operating. the blade. carrying devices,

Fig. ii. is. a sectional. elevational view. onthat 'line H of Fig. 10;

Fig. 12. is a sectional plan. l2-l2 of Fig. 10;

Figs. 13 and. 14 are front and end: elew-atiomtl vifiWS of. the. work or blade. carrying" denies; and.

Fig. 15 is a. diagrammatic view toreatplninttm operation of various cylinders of the appaoatnm Referring now to the drawings more in due tail, the invention willrbe fully descri s.

The apparatus of the invention. inclusions as shown in Figs. 1 andz athousing or casingfl whim encloses substantially all of the operatlngmeclm l'llSl'll.

The-housing. 2 is provided with front and: rear walls a and 6,. end walls 8; inner: end; walls I vertical walls ill. disposed; inwardly of the. planes of the front andrearwalls ll:- aaidze and? a horis zontai wall L2. There is an opening. lit through the. housing... as shown clearly in. Fig; 1, across: which extend a pair of: coaching abrasive rolls: l5 and mechanism I8 thereabove for supporting: a knife carrier all of which willbe described hereinafter.

It is intended that the housing lie-fabricated from sheet metal and constructed to enclose the operating mechanism so that as'few components will be accessible as is necessary for" the efllbient operation of' the apparatus.

The walls of the housing are provided with openings to provide access to the various oper--- ating compartments and components and these are closed by cover plates which may be removably secured thereto in. any convenient manner. Such plates are indicated by 20 to 2K inc. Other walls and partitions are associated with the housing as will be apparent as the. description pro.- ceeds.

The mechanism for supporting and. notatma the abrasive rolls 16 will. now be. described. with. particular. reference to Figs. 5. 6 and 7..

The mechanism to be described is disposed within the housing at its left hand endin. 1.. While supporting the ends of both rolls. only. one of said rolls is. driven thereby. There is a. similar mechanism within. the right-hand. and at the housing for supporting, the oppositeends of. both rolls but the'other roll. is driven therebia. Add scriptionv of the mechanism for one end on tlm rolls will be sufliclcnt.

Inner and outer brackets 34. and 35- anodised. to wall 9 and to a horizontal partition. 3! oithe housing. Shafts 4B are: oscillata-ble in the beanlugs 35 and 3B and levers 42 have upper ends thereof fixed to.- said shafts are. are: gears! ll Shafts 46 and 48 are rotatable in the lower ends view on tim line of the levers 42. the latter being the driving shaft for one of the rolls I6.

As shown in Fig. 5 a cylinder 50 is fixed to wall 9 in which a piston is reciprocable and from this a rod 52 extends that carries a rack 54 in mesh with gears 44. As the rod 52 is moved up or down, the levers 42 are swung towards and away from one another to move the ends of the rolls I6 towards and away from one another.

A shaft 58 is oscillatable in bearings such as 58 secured to wall 4 and a plate 60 is fixed to said shaft. A motor 62 is fixed to the plate 60 and a pulley 64 fixed to a shaft 56 thereof is connected by a belt or belts 68 to a pulley I fixed to driving shaft 48.

The parts are so arranged that the weight of the motor 62 tensions the belts 68 and allows movements of the lever 42 in which shaft 48 is journalied. An adjusting screw I2 is rotatable relative to wall 4 and a dog 14 in engagement therewith and engageable with plate I50 may be adjusted to limit movement of the plate in a counterclockwise direction.

The rolls IE are preferably formed from a stack of yieldable discs H which may be made from fabric or the like adapted to be charged with abrasive. Said discs are held in roll forming relation by collars I9 secured to shafts 2|.

The ends of roll shafts 2I and the shafts 46 and 4B are provided with interfitting tongues and grooves, as shown, and sleeve members 23 are slidabie relative to the shafts to hold them in operative engagement, see Figs. 4 and 5.

Retainers 80 are pivoted at 82 to walls 0 and are adapted to be disposed rearwardly of the members 23 to hold them in shaft coupling positions. The members 80 may be elevated to permit longitudinal movement of members 23 so that the ends of the roll shafts and shafts 46 and 48 may be disconnected and the rolls removed.

Mechanism for operating the blade supporting mechanism will now be described with particular reference to Figs. 10, 11 and 12.

Guide rnembers 90 vertically disposed have upper and lower ends secured to an upper wall 3 of the housing and a lower plate 92 secured tdthe wall I2 thereof. These guides are ar- A cylinder 96 has its lower end secured to member 02, a rod 98 extends upwardly from a piston reciprocable therein, and is secured to the upper part I00 of carriage 94.

Lateral extensions I02 of upper and lower rolls I04 journalled therein. A plate I06 horizontally disposed is arranged between the rolls I04 for longitudinal movements back and forth. As the rod is moved up and down by rod 98 the carriage is moved so as to move the plate I00 which may move longitudinally relative to the carriage.

A cylinder H0 is fixed to the carriage and a rod II2 of a piston therein is connected to a member II4 fixed to plate I00 whereby the plate may be reciprocated back and forth relative to the carriage which as aforesaid may be moved up and down relative to members 90.

A plate H6 is slidable in guides H8 fixed to plate 92. Rods I20 fixed to member I06 extend downwardly and are slidable through said plate II and bearings I22 fixed thereto. These rods I carry on their lower ends a longitudinal bar I24, see Fig. 1.

Hangers I26 fixed to opposite ends of member the carriage 94 have and receive upper ends of work such as blades W that depend therefrom. The members I30 are held in work clamping rela tion by clamp screws I34 and end members I36 fixed to plates I30 are receivable in and are supported by the hangers I so that the blades may be disposed between the rolls I6 and moved up and down as well as longitudinally relative thereto.

to the work supporting means relative 25 thereto will be described with reference to Fig.

I44 to a tank A constant delivery pump I40 is operatively connected to and driven by a motor I42 and the suction of the pump is connected by a pipe I46. The components described may be located in the lower portion of the housing and pipes extend from the pump and tank to the cylinders 50, 50, 96 and ill? with various valves in association therewith which may be 35 located as may be convenient for their operamvalve I50 to a pipe Iii tion.

A pipe I48 extends from the discharge side of pump I40 to a two-way valve I50 which is manually operable. A pipe I52 extends from I54 which is connected to a pipe I56 leading to the lower ends of cylinders 50. A pipe I56 extends from the other side of valve I50 to a pipe I58 connected to the upper ends of cylinders 50.

A pipe I60 connects tank I46 to discharge of pump I40. A pipe I62 extends from pipe I60 to valve I50 and a valve I64 is disposed in said line I60.

The valve I64 will be of the adjustable pressure relief type so constructed and arranged that fluid such as oil delivered by the pump I 40 will be delivered to the tank when a certain predetermined pressure in pipe I50 is exceeded.

It will be assumed that the cylinders 50 are in operation as is the motor 62 and the pump and motor I40 and I42.

With the cylinders 50 connected to the pump as described and shown and the valve I64 advalve I64.

The certain thereby to obtain the desired abrasive action on blades of a certain thickness.

However, should certain blades have a greater thickness than normal, the rolls I6 and thereby levers 42 are separated so as to move rods 52 downwardly overcoming the resistance offered by the pressure. Thus, while blades of normal thickness. are between the rolls I6 a. predetermined pressure is applied to the blades bythe rolls but with thicker blades the rolls separate to. accommodate them but apply the predetermined pressure. In other words the rolls move back and forth. to accommodate relative thick and thin blades but apply a predetermined pressure which may be as desired.

It will be understood that the rolls at one end may be separated independently of the relative spacing or the other ends of the rolls so that the longitudinal axes of the rolls is not necessarily parallel at all times but is such as to apply the predetermined pressure to the rolls regardless of the relative thicknes or the. blades therebetween.

When it is desired to separate the rolls I5, valve I-EIl is operated to connect the upper ends of cylinders 58 to the discharge of pump I46.

A pipe I10 extends from a discharge of pump MB. and has a control valve I12 therein. Pipes I'M and I16 extend from I10 to two-way valves I18 and I83 and have volume control valves i8? and HM therein. Pipes. I85. and I88 extend from valves I18 and I815 to one end of cylinders 98 and IIIl. Other pipes Hill. and H32 extend from opposite ends of cylinders Stand I i l to the valves I18 and I80. and pipes I54 and IE6 extend from valves I13 and I80 to the tank 146,

The valves I13 and Illa are of the well known form having levers I93 engageable by collars which are adjustable on rods 98 and I I2. As the rods are moved back and forth the collars act on the levers of the valves to operate them all to the end that the rods are operated in alternate directions accordingly as pressure is applied alternately to opposite ends of the cylinders.

The valves I82 and IM are adjustable to con trol the volume of fluid delivered to the cylinders through the valves I16 and led. The collars 2% are adjustable on rods 98 and. Hz to control the length of stroke of said rods. Thus the speed of reciprocation of rods 98 and H2 is variable as are the strokes thereof and the operation of said rod is independent of one another.

Thus the member I24 may have any desired longitudinal and up and down movement thereby moving the blades between the rolls I6 for the desired abrasive action.

It will be observed that the rolls may be easily connected to and disconnected from their sup-- porting and driving means which is so constructed and arranged that the rolls at their one ends may move towards and away from one another independently of the opposite ends while the work support may have independent longitudinal and up and down movements of variable magnitude all to the end that various abrasive operations may be performed on the work.

In operation a plurality of blades W are secured in the holder shown in Figs. 13 and 14 and opposite ends of the holder are placed in the hangers I26 so that the blades are suspended thereby for the action of rotating rolls I6 therebelow which are journalled in swingable arms 42. The arms are swung towards and away from one another and towards and away from the blades therebetween. Carriage 34 is reciprocable up and down and horizontal plate IBB from which hangers $28 are suspended is reciprocable back and forth in the carriage so that the blades between the rolls IE are moved up and down and back and forth, between the rolls I6. The carriage is reciprocated through cylinder 96, the plate I06 is reciprocated through cylinder H0 and to said supports for moving the arms supporting the rolls B0 are swung. back and forth through cylinders 50. Said cylinders are shown in Fig. 15. The pump Mil and tank I46 supply fluid under pressure and together with. piping connections and various valves the'operation of the mechanism is controlled. The rolls l6 are held against separation by valve I50 controlling how of fluid to cylinders 5m separating tendency of the roll levers is resisted by pressurein cylinders 50. Thereby the desired pressure of the rolls on the blades may be obtained; Valve I50 may of course be operated to. release pressure for separation of the rolls. Valves. I18 and Hill for cylinder Hi? and are actuated in opposite directions by rods and collars of the: pistons oi? said cylinders so that the pistons of the cylinders are reciprocated in opposite directions whereby carrage 94 is reciprocated vertically up and down and the plate I86 is reciprocated in the carriage horizontally. In this way the blades are reciprocated vertically up anddown and horizontally back and forth between the rotating rolls;

The invention may be embodied in other specific forms without departing from the essential characteristics thereof. Hence, theprcsent. embodiments are therefore to be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are therefore intended to be embraced therein.

What it is desired to claim and secure by Let.- ters Patent of the United States is:

1. A machine of the class described comprising in combination, spaced pairs of relatively movable roll supports, a pair of rolls, engageable con-- nections between opposite ends of the rolls and the supports of the pairs thereof, separate means. at opposite ends of said rolls for driving one of them, independent pressure operated means at opposite ends of the rolls operativsly connectedthe supports of the pairs towards and away from one another, holder supporting means, a holder for a plurality of depending work pieces disposed between said rolls, actuating means for moving said holder supporting means up and down and back and forth whereby work pieces therebetween are moved longitudinally of the rolls and in planes at right angles thereto.

2. A machine of the class described comprising in combination, spaced pairs of relatively movable roll supports, a pair of rolls, engageable connections between opposite ends of the rolls and the supports of the pairs thereof, separate means at opposite ends of said rolls for driving one of them, independent pressure operated means at opposite ends of the rolls operatively connected to said supports for moving the supports of the pairs towards and away from one another, holder supporting means, a holder for a plurality of depending work pieces disposed between said rolls, actuating means for moving said holder supporting means up and down and back and forth whereby Work pieces therebetween are moved longitudinally of the rolls and in planes at right angles thereto, said roll supports including relatively swingable levers, and said independent pressure operated means including a cylinder having a piston rod operatively connected to said levers.

3. A machine of the class described comprising rolls and shafts and holding means slideblethe 'eon to reieasably hold said members in engagement.

and said rolls, and mounting means for said moengagement, and movable means to retain said holding means in holding positions.

6. A machine 01 the class described comprising EARLE M. CHASE.

REFERENCES CITED The following references are of record in tile file of this patent:

UNITED STATES PATENTS a new? 

